Jump to content
Sign in to follow this  
nissan200sx.dk

Idle control problems..

Recommended Posts

Hi.

My idle control valve works backwards....

When duty cycle rises, rpms drops.

Its a 2 pin wired to Ign 8, with diode mounted, as the manual says.

Type selected in the software is a unipolar, 6 terminal.

Any ideas?

Share this post


Link to post
Share on other sites

On the setting for the ignition drive do you have is set to ISC or ISC slave?

The other factor could be some solenoids have a minimum duty cycle that if you go below it starts to open up again.

Swapping the polarity should make no difference.

Also check the frequency this should be up around 250hz

Share this post


Link to post
Share on other sites

Simon:

I can only select "ISC solenoid" for my ignition drive output. (Use number eight, if that makes any difference)

My setting is 200Hz, as recommended in the manual. but will change it to 250Hz.

I have to limit max clamp to 20% then it idles nice. If I up max clamo, revs just goes down. It kills the engine if set to more than 50%.

When the ECU want to increase revs, by increasing duty cycle, revs goes down. So it cant figure out to control idle at all.

There is no way to make it do it the other way around? so more duty cycle is less revs..?

Share this post


Link to post
Share on other sites

When you power up the unit is the solenoid being held wide open?

In your wiring to the solenoid you have 12V to one side and then the ECU is providing the earth with a flywheel diode to 12V Hot.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...